package com.ds.common.org.expression.personposition;

import java.util.ArrayList;
import java.util.List;
import java.util.Stack;
import java.util.StringTokenizer;

import com.ds.common.expression.ParseException;
import com.ds.common.expression.function.Function;
import com.ds.org.OrgManager;
import com.ds.org.Role;
import com.ds.org.RoleNotFoundException;
import com.ds.server.OrgManagerFactory;

/** 
 * 取得指定某些人员岗位名称的岗位
 * <p>Title: JDSORG组织机构中间件</p>
 * <p>Description: </p>
 * <p>Copyright: jds Copyright (c) 2003-2008</p>
 * <p>Company: www.justdos.net</p>
 * @author wenzhangli
 * @version 2.0
 */
public class GetPersonPositionByNames extends Function {
	public GetPersonPositionByNames() {
		numberOfParameters = 1;
	}

	public void run(Stack stack) throws ParseException
	{
		checkStack(stack); // check the stack

		Object param2 = stack.pop(); 
		stack.push(perform( param2));
	}

	protected Role[] perform(Object param1) throws ParseException {
		if (param1 == null) {
			return new Role[0];
		}
		if (param1 instanceof String) {
			OrgManager orgManager = OrgManagerFactory.getOrgManager();
			String Ids = (String)param1;
			StringTokenizer st = new StringTokenizer(Ids, ":");
			List result = new ArrayList();
			while(st.hasMoreTokens()) {
				try {
				    Role position = orgManager.getPersonPositionByName(st.nextToken());
					if (position != null) {
						result.add(position);
					}
				} catch (RoleNotFoundException e) {
				}
			}
			return (Role[])result.toArray(new Role[result.size()]);
		}
		throw new ParseException("Invalid parameter type in:" + this.getClass().getName() + ", param1 is " + param1.getClass().getName());
	}
}